enzymes. the body is always looking for ways to save energy! this is where enzymes come into play!...
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Enzymes What are they? What properties do they have? Why do we need them? How do they work?TRANSCRIPT
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Enzymes
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The body is always looking for ways to save energy!
This is where enzymes come into play!
Help the body do this!
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Enzymes
What are they? What properties do they have?
Why do we need them?
How do they work?
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Enzymes – What are they?Proteins that help chemical reactions to
occur in living organisms
Important Parts of a Chemical Reaction
Reactants Products
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Enzymes
Properties
Specific (a different enzyme for each different type of reactions in the body)
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Enzymes
PropertiesSpecific
Increase rate of the reaction (help make reaction happen more often or faster)
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Enzymes
Properties
SpecificIncrease rate of the reaction
Unchanged at the end of the reaction
Reusable
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Enzymes
PropertiesSpecific
Increase rate of the reactionUnchanged at the end of the reaction
Why do you need them?
Reusable
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Enzymes
Need themReactions naturally occur too slow to maintain life!
Can’t increase temperatures in cells (fatal)
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How do enzymes work?
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Lock & Key TheoryThe enzyme needs to bind to the reactants called
a substrate at the active site to work.
EnzymeReactant
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Let’s Do An Example
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Sucrose + H2O
Glucose + Fructose
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Sucrose + H2O
Glucose + Fructose
Reactants
Products
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For a reaction to occur the sucrose& water have to collide with
enough energy to break the bond that holds them together to form
the new products.
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For a reaction to occur the sucroseand water would have to collide with
enough energy to break bonds and formthe new products.
This energy is the called activation energy.
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Energy
Progress of reaction
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Energy
Progress of reaction
Substratesor
Reactants
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Energy
Progress of reaction
Substrates Products
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Energy
Progress of reaction
Substrates Products
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Energy
Progress of reaction
Substrates Products
Activation energy
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Energy
Progress of reaction
Substrates Products
Activation energyEnzymes reduce the
Height aka reduce the activation
energy
An Enzyme is like a short cut!
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What factors can affect the activity of enzymes?
Based on these graphs, what conditions are generally the best for enzyme function?